Use an advanced search to search by "document type" equals "film review" and "title" equals the title of your moves. This database does not contain full text, but you can use the citation information to find the review in JumboSearch.
Designed to give you a rating for movies based on analyzing the reviews in newspapers, magazines, and websites. Usually includes a link to the source. But make sure you evaluate the source before relying on the review. Not all reviews are created equal!